A shot of cold air is expect to spread across the South Island today and tonight.
As we mentioned earlier, this could be the spark that sets off a few thunderstorms this afternoon and this evening about eastern Canterbury and eastern Otago.
This new air mass is cold enough that some of the precipitation may come down in the form of flakes rather than liquid. Current indications lead WeatherWatch.co.nz forecasters and MetService forecasters to believe brief period of snow is possible for the Canterbury High Country during the overnight hours. Accumulations of 4 to 6 cm are possible above 900m with lesser amounts down to 600m. No snow is expected below 600m.
As a result, government forecaster MetService has issued the following Road Snow Warnings:
Farmers should be aware that cold, snow and breezy conditions may also put stress on livestock.
Homepage image/ Jude Wightman